CN109737054B - Rotary cylinder body and plug plate combined electric liquid pump - Google Patents
Rotary cylinder body and plug plate combined electric liquid pump Download PDFInfo
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- CN109737054B CN109737054B CN201910054256.3A CN201910054256A CN109737054B CN 109737054 B CN109737054 B CN 109737054B CN 201910054256 A CN201910054256 A CN 201910054256A CN 109737054 B CN109737054 B CN 109737054B
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Abstract
The invention discloses a plug plate combined electric-hydraulic pump of a rotary cylinder body, which is an electric-hydraulic pump combined by the rotary cylinder body and a plug plate, wherein the rotary cylinder body rotates, the plug plate slides along a groove of the rotary cylinder body under the action of an external expanding spring, and high-pressure oil and low-pressure oil are subjected to flow distribution and mixing under the allocation of a flow guide shaft, so that the stable supply of the oil is realized; according to the rotary cylinder and piston plate combined electric liquid pump, the complexity of the original plunger type electric liquid pump is structurally reduced, the material and processing cost are simultaneously reduced, the friction area of the original plunger pump is reduced, the capacity loss is reduced, and the mechanical efficiency is enhanced; install inside the rotor with the mechanism, reduce the volume of 3 ally oneself with the pump to be favorable to the heat dissipation of motor, prolonged the life of electric liquid pump.
Description
Technical Field
The invention relates to the field of electro-hydraulic pump structures, in particular to a rotary cylinder body and plug plate combined electro-hydraulic pump.
Background
The hydraulic power source mainly comprises three types of traditional motor-pump set, a shielding type motor pump and an electro-hydraulic pump. The traditional motor-pump set and the shielding motor pump adopt a mode that a motor is connected with a liquid pump by a coupling, and the mode brings many disadvantages: noise and vibration caused by non-concentricity of the coupling; the axial arrangement makes the volume and mass of the device larger; the reliability is reduced due to the connection and the matching of multiple parts, and the risk of oil leakage is increased. Therefore, the electric liquid pump is a main development direction of a hydraulic power source as a highly integrated motor pump.
The high-pressure industrial power pump at the present stage adopts a plunger form. The volume of a sealed working cavity is changed by means of reciprocating motion of a block in a cylinder body, so that oil absorption and oil pressing are realized. Has the advantages of high rated pressure, convenient flow regulation, etc. But also has the disadvantages of complex structure, high manufacturing cost, large volume and the like. The existing hydraulic power mechanism adopts a three-section structure and is divided into a body, a motor and a coupler, so that the structural volume is greatly reduced, the efficiency is improved, and the manufacturing cost is reduced.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a rotary cylinder and plug plate combined electric liquid pump, which adopts the technical scheme that:
a plug plate combined electric liquid pump with rotary cylinders comprises a shell, an oil suction end cover, an oil outlet end cover, an oil suction joint, an oil outlet joint, a stator winding, a rotor winding, a needle roller bearing, a spring set, two rotary cylinders, a flow guide shaft, two flow distribution sleeves, a plug plate, an outer expansion spring and a rotation stop pin.
The oil suction end cover and the oil outlet end cover are fixed at two ends of the shell, the inner wall of the shell is fixedly connected with the stator winding, and the rotor winding rotates between the oil suction end cover and the oil outlet end cover through the needle roller bearing. The outer side of the rotary cylinder body is provided with a key groove which is connected with the rotor winding through a spline and rotates coaxially with the rotor winding. The two groups of rotary cylinder bodies are symmetrically arranged, and a spring group is arranged between the two rotary cylinder bodies to ensure that the two rotary cylinder bodies are tensioned outwards; the groove on the inner side of the rotary cylinder body is of an undulating structure.
The guide shaft is fixed between the oil suction end cover and the oil outlet end cover through the rotation stopping pin and passes through the rotary cylinder body and the flow distribution sleeve to form coaxial matching. Under the action of the rotation stopping pin, the guide shaft cannot rotate along with the rotation of the rotary cylinder body. The two ends of the flow guide shaft are respectively provided with an oil inlet blind hole and an oil outlet blind hole, the oil suction joint is connected to the oil inlet blind hole, and the oil outlet joint is connected to the oil outlet blind hole. A first guide groove and a second guide groove are formed in the end, close to the oil inlet blind hole, of the guide shaft; and a third guide groove and a fourth guide groove are arranged at the end of the guide shaft close to the oil outlet blind hole. The first diversion trench and the second diversion trench are symmetrically arranged with the fourth diversion trench and the third diversion trench. The first diversion trench is provided with a first coupling through hole connected to the oil inlet blind hole, the second diversion trench is provided with a second coupling through hole connected to the oil outlet blind hole, the fourth diversion trench is provided with a fourth coupling through hole connected to the oil inlet blind hole, and the third diversion trench is provided with a third coupling through hole connected to the oil outlet blind hole.
The two flow distribution sleeves are respectively fixed between the oil suction end cover and the rotary cylinder body and between the oil outlet end cover and the rotary cylinder body through the rotation stopping pin. The peripheral wall of the flow distribution sleeve is provided with a plug plate hole, the outer expansion spring and the plug plate are jointly pressed in the plug plate hole on the flow distribution sleeve, and the plug plate is matched with the groove.
A first oil through hole and a second oil through hole are respectively arranged on two sides of the plug plate hole. A first oil through hole fixed on a flow distribution sleeve between the oil suction end cover and the rotary cylinder body is connected to the first guide groove, and a second oil through hole is connected to the second guide groove. The oil inlet blind hole is communicated with the first oil through hole through the first communicating through hole and is finally connected to the groove of the left rotary cylinder body to form an oil inlet path; the oil outlet blind hole is communicated with the second oil through hole through the second connecting through hole and is finally connected to the groove of the left rotary cylinder body to form an oil outlet path.
And a first oil through hole fixed on a flow distribution sleeve between the oil outlet end cover and the rotary cylinder body is connected to the fourth diversion groove, and a second oil through hole is connected to the third diversion groove. The oil inlet blind hole is communicated with the first oil through hole through the fourth communication through hole and is finally connected to the groove of the right rotary cylinder body to form an oil inlet path; the oil outlet blind hole is communicated with the second oil through hole through the third connecting through hole and is finally connected to the groove of the right rotary cylinder body to form an oil outlet path.
The outer expanding spring and the plug plate are jointly pressed in the plug plate hole on the flow distribution sleeve, and the plug plate is matched with the groove of the rotary cylinder body. The stator winding of the electro-hydraulic pump supplies power, so that the rotor winding rotates under the rolling support of the needle roller bearings on the two sides, the rotor winding drives the rotary cylinder body to rotate, and the groove of the rotary cylinder body is in a wavy shape and acts together with the plug plate to change the volumes of the inlet cavity and the outlet cavity. The effect of oil absorption and oil pressing is achieved, and the two groups of rotary cylinder bodies are symmetrically arranged to enable the oil pressing and absorption actions to be continuous. The two groups of mechanism oil sources are gathered together through the common action of the flow distribution sleeve and the flow guide shaft, and the same inlet and the same outlet are realized.
Optionally, the oil suction joint is connected with the oil suction end cover through a bolt, and the oil outlet joint is screwed into the oil outlet end cover through thread fit; the inner wall of the shell is fixedly connected with the stator winding through a spline.
Optionally, a binding post is mounted on the shell and connected with a temperature sensor and a pressure sensor in the electro-hydraulic pump.
According to the rotary cylinder and piston plate combined electric liquid pump, the complexity of the original plunger pump is reduced structurally, the number of main parts is reduced by 10, the material and processing cost is reduced simultaneously, the friction area of the original plunger pump is reduced, the capacity loss is reduced, the mechanical efficiency is enhanced, the mechanism is installed in a rotor, the volume of a 3-connection pump is reduced, the heat dissipation of a motor is facilitated, and the service life of the mechanism is prolonged.
Drawings
The invention is described in further detail below with reference to the drawings and the detailed description;
FIG. 1 is a schematic longitudinal section of a rotary cylinder and a plunger plate combined electrohydraulic pump.
Fig. 2 is a front view of the rotary cylinder of the present invention.
Fig. 3 is a front view of the fluid guide shaft of the present invention.
Fig. 4 is a front view of the port sleeve of the present invention.
Figure 5 is a front view of the closure plate of the present invention.
FIG. 6 is a schematic view of the combination of the rotary cylinder and the port sleeve of the present invention.
Reference numerals: 1-shell, 2-oil absorption end cover, 3-oil outlet end cover, 4-oil absorption joint, 5-oil outlet joint, 6-stator winding, 7-rotor winding, 8-needle bearing, 9-spring set, 10-rotary cylinder body, 101-groove, 11-guide shaft, 111-oil inlet blind hole, 112-first guide groove, 1121-first through hole, 113-second guide groove, 1131-second through hole, 114-oil outlet blind hole, 115-third guide groove, 1151-third through hole, 116-fourth guide groove, 1161-fourth through hole, 12-flow distribution sleeve, 121-plug hole, 122-first oil through hole, 123-second oil through hole, 13-plug plate, 14-outward expansion spring, 15-rotation stopping pin, 16-terminal.
Detailed Description
As shown in fig. 1-6, the plug plate combined electric liquid pump for rotary cylinders disclosed in the present invention includes a housing 1, an oil suction end cap 2, an oil outlet end cap 3, an oil suction joint 4, an oil outlet joint 5, a stator winding 6, a rotor winding 7, a needle bearing 8, a spring set 9, two rotary cylinders 10, a guide shaft 11, two thrust sleeves 12, a plug plate 13, an outward expansion spring 14, and a rotation stop pin 15.
The oil suction end cover 2 and the oil outlet end cover 3 are fixed at two ends of the shell 1, the oil suction joint 4 is connected with the oil suction end cover 2 through a bolt, and the oil outlet joint 5 is screwed into the oil outlet end cover 3 through threaded fit; the inner wall of the shell 1 is fixedly connected with a stator winding 6 through a spline. The rotor winding 7 rotates between the oil suction end cover 2 and the oil outlet end cover 3 through a needle bearing 8; the outer side of the rotary cylinder body 10 is provided with a key groove which is connected with the rotor winding 7 through a spline and rotates coaxially. The two groups of rotary cylinder bodies 10 are symmetrically arranged, and a spring group 9 is arranged between the two rotary cylinder bodies 10 to ensure that the two rotary cylinder bodies 10 are tensioned outwards; the groove 101 on the inner side of the rotary cylinder 10 has an undulated structure.
The diversion shaft 11 is fixed between the oil suction end cover 2 and the oil outlet end cover 3 through the rotation stopping pin 15 and penetrates through the rotary cylinder body 10 and the flow distribution sleeve 12 to form coaxial fit. An oil inlet blind hole 111 and an oil outlet blind hole 114 are respectively formed in two ends of the guide shaft 11, the oil suction connector 4 is connected to the oil inlet blind hole 111, the oil outlet connector 5 is connected to the oil outlet blind hole 114, and a first guide groove 112 and a second guide groove 113 are formed in the end, close to the oil inlet blind hole 111, of the guide shaft 11; the end of the guide shaft 11 near the oil outlet blind hole 114 is provided with a third guide groove 115 and a fourth guide groove 116. The first diversion trench 112 and the second diversion trench 113 are symmetrically arranged with the fourth diversion trench 116 and the third diversion trench 115; the first guiding gutter 112 is provided with a first coupling through hole 1121 connected to the oil inlet blind hole 111, the second guiding gutter 113 is provided with a second coupling through hole 1131 connected to the oil outlet blind hole 114, the fourth guiding gutter 116 is provided with a fourth coupling through hole 1161 connected to the oil inlet blind hole 111, and the third guiding gutter 115 is provided with a third coupling through hole 1151 connected to the oil outlet blind hole 114.
The two flow distribution sleeves 12 are respectively fixed between the oil suction end cover 2 and the rotary cylinder body 10 and between the oil outlet end cover 3 and the rotary cylinder body 10 through the rotation stopping pin 15. The peripheral wall of the flow distribution sleeve 12 is provided with a plug hole 121, the outer expansion spring 14 and the plug plate 13 are jointly pressed into the plug hole 121 on the flow distribution sleeve 12, and the plug plate 13 is matched with the groove 101.
The plug hole 121 is provided at both sides thereof with a first oil passing hole 122 and a second oil passing hole 123, respectively. A first oil passage hole 122 fixed to the flow sleeve 12 between the suction head cover 2 and the rotary cylinder body 10 is connected to the first guide groove 112, and a second oil passage hole 123 is connected to the second guide groove 113. The oil inlet blind hole 111 is communicated with the first oil through hole 122 through the first through hole 1121 and is connected to the groove 101 of the left rotary cylinder 10, and serves as an oil inlet path; the oil outlet blind hole 114 is connected to the groove 101 of the left rotary cylinder 10 through the second communicating hole 1131 and the second oil passing hole 123, and is an oil outlet path.
The first oil passage hole 122 fixed to the flow sleeve 12 between the oil outlet cover 3 and the rotary cylinder 10 is connected to the fourth guide groove 116, and the second oil passage hole 123 is connected to the third guide groove 115. The oil inlet blind hole 111 is communicated with the first oil through hole 122 through the fourth communication through hole 1161 and connected to the groove 101 of the right rotary cylinder 10 to form an oil inlet path; the oil outlet blind hole 114 is communicated with the second oil through hole 123 through a third communication through hole 1151 and connected to the groove 101 of the right rotary cylinder 10, and is an oil outlet path.
The expansion spring 14 and the plug plate 13 are co-pressed into the plug plate hole 121 on the flow distribution sleeve 12, and the plug plate 13 is matched with the groove 101. The stator winding 6 of the electro-hydraulic pump supplies power, so that the rotor winding 7 rotates under the rolling support of the needle roller bearings 8 on the two sides, the rotor winding 7 drives the rotary cylinder body 10 to rotate, and the groove 101 of the rotary cylinder body is in a wavy shape and is acted together with the plug plate 13 to change the volumes of an inlet cavity and an outlet cavity; the effect of oil absorption and oil pressing is achieved, and the two groups of rotary cylinder bodies 10 are symmetrically arranged to enable the oil pressing and absorption actions to be continuous. The two groups of mechanism oil sources are converged together through the combined action of the flow distribution sleeve 12 and the flow guide shaft 11, and the same inlet and the same outlet are realized.
A terminal 16 is mounted on the housing 1, and the terminal 16 is connected to a temperature and pressure sensor (not shown) in the electric liquid pump.
The embodiment is only one embodiment of the present invention, and it is obvious to those skilled in the art that modifications to the present invention without inventive exercise are also within the scope of the present invention.
Claims (3)
1. The utility model provides a rotatory cylinder cock board combination electric liquid pump which characterized in that: the oil-absorbing device comprises a shell (1), an oil-absorbing end cover (2), an oil outlet end cover (3), an oil-absorbing joint (4), an oil outlet joint (5), a stator winding (6), a rotor winding (7), a needle bearing (8), a spring group (9), two rotary cylinder bodies (10), a guide shaft (11), two flow distribution sleeves (12), a plug plate (13), an outer expanding spring (14) and a rotation stopping pin (15);
the oil suction end cover (2) and the oil outlet end cover (3) are fixed at two ends of the shell (1), the inner wall of the shell (1) is fixedly connected with the stator winding (6), and the rotor winding (7) rotates between the oil suction end cover (2) and the oil outlet end cover (3) through the needle roller bearing (8); a key groove is formed in the outer side of the rotary cylinder body (10), is connected with the rotor winding (7) through a spline and rotates coaxially; the two groups of rotary cylinder bodies (10) are symmetrically arranged, and a spring group (9) is arranged between the two rotary cylinder bodies (10) to ensure that the two rotary cylinder bodies (10) are outwards tensioned; the groove (101) on the inner side of the rotary cylinder body (10) is of an undulating structure;
the guide shaft (11) is fixed between the oil suction end cover (2) and the oil outlet end cover (3) through a rotation stopping pin (15) and passes through the rotary cylinder body (10) and the flow distribution sleeve (12) to form coaxial matching; an oil inlet blind hole (111) and an oil outlet blind hole (114) are respectively formed in two ends of the flow guide shaft (11), the oil suction joint (4) is connected to the oil inlet blind hole (111), the oil outlet joint (5) is connected to the oil outlet blind hole (114), and a first flow guide groove (112) and a second flow guide groove (113) are formed in the end, close to the oil inlet blind hole (111), of the flow guide shaft (11); a third diversion trench (115) and a fourth diversion trench (116) are arranged at the end, close to the oil outlet blind hole (114), of the diversion shaft (11); the first guide groove (112), the second guide groove (113), the fourth guide groove (116) and the third guide groove (115) are symmetrically arranged; a first coupling through hole (1121) connected to the oil inlet blind hole (111) is formed in the first guide groove (112), a second coupling through hole (1131) connected to the oil outlet blind hole (114) is formed in the second guide groove (113), a fourth coupling through hole (1161) connected to the oil inlet blind hole (111) is formed in the fourth guide groove (116), and a third coupling through hole (1151) connected to the oil outlet blind hole (114) is formed in the third guide groove (115);
the two flow distribution sleeves (12) are respectively fixed between the oil suction end cover (2) and the rotary cylinder body (10) and between the oil outlet end cover (3) and the rotary cylinder body (10) through a rotation stopping pin (15); a plug plate hole (121) is arranged on the peripheral wall of the flow distribution sleeve (12), the outer expansion spring (14) and the plug plate (13) are jointly pressed in the plug plate hole (121) on the flow distribution sleeve (12), the plug plate (13) is matched with the groove (101),
a first oil through hole (122) and a second oil through hole (123) are respectively formed in two sides of the plug hole (121); a first oil through hole (122) fixed on a flow distribution sleeve (12) between the oil suction end cover (2) and the rotary cylinder body (10) is connected to the first guide groove (112), and a second oil through hole (123) is connected to the second guide groove (113); a first oil through hole (122) fixed to a flow distribution sleeve (12) between an oil outlet end cover (3) and a rotary cylinder body (10) is connected to the fourth guide groove (116), and a second oil through hole (123) is connected to the third guide groove (115).
2. A rotary cylinder plug plate combination electric liquid pump according to claim 1, characterized by: the oil suction joint (4) is connected with the oil suction end cover (2) through a bolt, and the oil outlet joint (5) is screwed into the oil outlet end cover (3) through threaded fit; and the inner wall of the shell (1) is fixedly connected with a stator winding (6) through a spline.
3. A rotary cylinder plug plate combination electric liquid pump according to claim 1, characterized by: and a binding post (16) is arranged on the shell (1), and the binding post (16) is connected with a temperature sensor and a pressure sensor in the electro-hydraulic pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910054256.3A CN109737054B (en) | 2019-01-21 | 2019-01-21 | Rotary cylinder body and plug plate combined electric liquid pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910054256.3A CN109737054B (en) | 2019-01-21 | 2019-01-21 | Rotary cylinder body and plug plate combined electric liquid pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109737054A CN109737054A (en) | 2019-05-10 |
| CN109737054B true CN109737054B (en) | 2021-02-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910054256.3A Active CN109737054B (en) | 2019-01-21 | 2019-01-21 | Rotary cylinder body and plug plate combined electric liquid pump |
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Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5540564A (en) * | 1993-11-12 | 1996-07-30 | Stanadyne Automotive Corp. | Rotary distributor type fuel injection pump |
| CN201606207U (en) * | 2010-02-02 | 2010-10-13 | 华中科技大学 | Double-swashplate valve distributing axial plunger-type water hydraulic canned motor pump |
| CN102619720B (en) * | 2012-03-30 | 2015-07-22 | 华中科技大学 | Plunger type motor pump |
| CN104791210B (en) * | 2015-03-11 | 2016-08-31 | 华中科技大学 | A kind of two inclined plate plunger type variable capacity pump |
| CN105179192B (en) * | 2015-09-06 | 2017-01-04 | 哈尔滨工业大学 | Ring plug electric liquid pump |
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- 2019-01-21 CN CN201910054256.3A patent/CN109737054B/en active Active
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